Evaluation of Background Push Content Download Services to Mobile Devices Over DVB Networks

Fraile, Francisco José López; Fez, Ismael de; Guerri, Juan Carlos

doi:10.1109/tbc.2013.2289639

Cited by 8 publications

(9 citation statements)

References 28 publications

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“…In this way, given a set of files with certain size and utility, it is needed to determine the combination of files that better use the available cache space, considering the total size of the cache [53]. This is referred as the 0-1 knapsack optimization problem [54]. In this sense, there are different cache replacement policies to optimize the cache, some of them are presented in [55] and [56].…”

Section: Discussionmentioning

confidence: 99%

A personalized system for scalable distribution of multimedia content in multicast wireless networks

Fez

Gil

Fons

et al. 2014

Multimed Tools Appl

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Abstract. This paper presents a novel architecture for scalable multimedia content delivery over wireless networks. The architecture takes into account both the user preferences and context in order to provide personalized contents to each user. In this way, third-party applications filter the most appropriate contents for each client in each situation. One of the key characteristics of the proposal is the scalability, which is provided, apart from the use of filtering techniques, through the transmission in multicast networks. In this sense, content delivery is carried out by means of the FLUTE (File Delivery over Unidirectional Transport) protocol, which provides reliability in unidirectional environments through different mechanisms such as AL-FEC (Application Layer -Forward Error Correction) codes, used in this paper. Another key characteristic is the context-awareness and personalization of content delivery, which is provided by means of context information, user profiles, and adaptation. The system proposed is validated through several empirical studies. Specifically, the paper presents evaluations of two types that collect objective and subjective measures. The first evaluate the efficiency of the transmission protocol, analyzing how the use of appropriate transmission parameters reduces the download time (and thus increasing the Quality of Experience), which can be minimized by using caching techniques. On the other hand, the subjective measures present a study about the user experience after testing the application and analyze the accuracy of the filtering process/strategy. Results show that using AL-FEC mechanisms produces download times until four times lower than when no protection is used. Also, results prove that there is a code rate that minimizes the download time depending on the losses and that, in general, code rates 0.7 and 0.9 provide good download times for a wide range of losses. On the other hand, subjective measures indicate a high user satisfaction (more than 80%) and a relevant degree of accuracy of the content adaption.

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Section: Discussionmentioning

confidence: 99%

A personalized system for scalable distribution of multimedia content in multicast wireless networks

Fez

Gil

Fons

et al. 2014

Multimed Tools Appl

Self Cite

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“…In [6], Fraile et al propose a background content download service using residue network capacity. They design the FLUTE protocol to opportunistically insert packets when the underlying streaming is spare and the downloaded contents are stored in mobile terminals for future access.…”

Section: B Related Workmentioning

confidence: 99%

“…• Delay-tolerant contents. The network is designed for the delivery of delay-tolerant contents as described in [6]. In other words, it means that the content delivery delay at the scale of several minutes (the duration when a VU is within an RSU) is tolerable.…”

Section: B Design Issuesmentioning

confidence: 99%

Providing Vehicular Infotainment Service Using VHF/UHF TV Bands via Spatial Spectrum Reuse

Chen

Liu

Zhou

et al. 2015

IEEE Trans. on Broadcast.

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In this paper, we identify the potential of the television bands to be used for providing vehicular infotainment service. Specifically, content delivery from the roadside unit to vehicular users is conducted by exploiting the spectrum holes, which is also referred to as spatial spectrum reuse. In this manner, the spectrum utilization efficiency is improved and the digital television service is not interfered. We first give a thorough description on such vehicular content delivery network and indicate the major design issues. After that, we respectively develop user and resource models tailored for our scenario by considering their characteristics and formulate the resource allocation as a system throughput maximization problem based on these models. For practical implementation, we devise a vehicular content delivery protocol incorporating a dynamic spectrum access algorithm and a maximal frame size design method, both of which aim at throughput and spectrum efficiency enhancement. Extensive simulations are conducted and the numerical results show the system performance is improved with our approaches.Index Terms-VHF/UHF television (TV) bands, spatial spectrum reuse, dynamic spectrum access (DSA), vehicular service, content delivery.

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“…[5] proposes a load balance scheme to minimize the user response time for the converged network, but the user storage ability is not exploited. The performance of push-based DVB network is investigated in [6], which includes the application layer forward error correction (AL-FEC) optimization, the carousel frequency design and the storage management algorithm. [7] studies the problem of delivering contents to users before their deadlines.…”

Section: Introductionmentioning

confidence: 99%

“…We define the network capacity as the number of users supported within a target block rate. Two different criteria, namely, the offloading probability maximization [6] and the offloading data percent maximization [9], are proposed to derive the optimal pushing scheme under the converged network. By maximizing the offloading probability, more user requests can be satisfied locally, resulting in lower block rate and better user experience.…”

Section: Introductionmentioning

confidence: 99%

On the push-based converged network with limited storage

Feng

Chen

Liu

2015

2015 IEEE International Conference on Communications (ICC)

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By pushing popular contents directly to users through broadcast networks while serving individual requests using the cellular networks, a "converged" wireless network provides a highly effective means to cope with the wireless traffic bottleneck. In this paper, we contribute to analyze the network capacity of the push-based converged network with limited user storage and then develop the corresponding optimal pushing schemes. Specifically, we first establish two operational regions for the converged network, namely, the push-limited region and the cache-limited region, to reveal the fundamental tradeoff between the broadcast pushing ability and the user caching capacity. The network capacity is then derived under the traditional popularity-based pushing scheme. Moreover, we investigate the optimal pushing scheme under two different criteria, i.e., to maximize either the offloading probability or the offloading data percent. The pushing optimization problem is modeled as the 0-1 knapsack problem, and can be easily solved by the greedy algorithm. Interestingly, the optimal scheme depends on not only the optimization objective, but also the region where the system operates. Finally, numerical results are provided to confirm the accuracy of the developed analytical results.

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Evaluation of Background Push Content Download Services to Mobile Devices Over DVB Networks

Cited by 8 publications

References 28 publications

A personalized system for scalable distribution of multimedia content in multicast wireless networks

A personalized system for scalable distribution of multimedia content in multicast wireless networks

Providing Vehicular Infotainment Service Using VHF/UHF TV Bands via Spatial Spectrum Reuse

On the push-based converged network with limited storage

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